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| 1 | /* |
1 | /* |
| 2 | * Copyright (C) 2001-2004 Jakub Jermar |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
| 3 | * All rights reserved. |
3 | * All rights reserved. |
| 4 | * |
4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
7 | * are met: |
| 8 | * |
8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
| 14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
| 15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
| 16 | * |
16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
27 | */ |
| 28 | 28 | ||
| 29 | #ifndef __TASK_H__ |
29 | #ifndef __TASK_H__ |
| 30 | #define __TASK_H__ |
30 | #define __TASK_H__ |
| 31 | 31 | ||
| 32 | #include <typedefs.h> |
32 | #include <typedefs.h> |
| 33 | #include <synch/spinlock.h> |
33 | #include <synch/spinlock.h> |
| 34 | #include <synch/mutex.h> |
34 | #include <synch/mutex.h> |
| - | 35 | #include <synch/futex.h> |
|
| 35 | #include <adt/btree.h> |
36 | #include <adt/btree.h> |
| 36 | #include <adt/list.h> |
37 | #include <adt/list.h> |
| 37 | #include <ipc/ipc.h> |
38 | #include <ipc/ipc.h> |
| 38 | #include <security/cap.h> |
39 | #include <security/cap.h> |
| 39 | #include <arch/proc/task.h> |
40 | #include <arch/proc/task.h> |
| 40 | 41 | ||
| 41 | /** Task structure. */ |
42 | /** Task structure. */ |
| 42 | struct task { |
43 | struct task { |
| 43 | /** Task lock. |
44 | /** Task lock. |
| 44 | * |
45 | * |
| 45 | * Must be acquired before threads_lock and thread lock of any of its threads. |
46 | * Must be acquired before threads_lock and thread lock of any of its threads. |
| 46 | */ |
47 | */ |
| 47 | SPINLOCK_DECLARE(lock); |
48 | SPINLOCK_DECLARE(lock); |
| 48 | 49 | ||
| 49 | char *name; |
50 | char *name; |
| 50 | link_t th_head; /**< List of threads contained in this task. */ |
51 | link_t th_head; /**< List of threads contained in this task. */ |
| 51 | as_t *as; /**< Address space. */ |
52 | as_t *as; /**< Address space. */ |
| 52 | task_id_t taskid; /**< Unique identity of task */ |
53 | task_id_t taskid; /**< Unique identity of task */ |
| 53 | 54 | ||
| 54 | /** If this is true, new threads can become part of the task. */ |
55 | /** If this is true, new threads can become part of the task. */ |
| 55 | bool accept_new_threads; |
56 | bool accept_new_threads; |
| 56 | 57 | ||
| 57 | count_t refcount; /**< Number of references (i.e. threads). */ |
58 | count_t refcount; /**< Number of references (i.e. threads). */ |
| 58 | 59 | ||
| 59 | cap_t capabilities; /**< Task capabilities. */ |
60 | cap_t capabilities; /**< Task capabilities. */ |
| 60 | 61 | ||
| 61 | /* IPC stuff */ |
62 | /* IPC stuff */ |
| 62 | answerbox_t answerbox; /**< Communication endpoint */ |
63 | answerbox_t answerbox; /**< Communication endpoint */ |
| 63 | phone_t phones[IPC_MAX_PHONES]; |
64 | phone_t phones[IPC_MAX_PHONES]; |
| 64 | atomic_t active_calls; /**< Active asynchronous messages. |
65 | atomic_t active_calls; /**< Active asynchronous messages. |
| 65 | * It is used for limiting uspace to |
66 | * It is used for limiting uspace to |
| 66 | * certain extent. */ |
67 | * certain extent. */ |
| 67 | 68 | ||
| 68 | task_arch_t arch; /**< Architecture specific task data. */ |
69 | task_arch_t arch; /**< Architecture specific task data. */ |
| 69 | 70 | ||
| 70 | /** |
71 | /** |
| 71 | * Serializes access to the B+tree of task's futexes. This mutex is |
72 | * Serializes access to the B+tree of task's futexes. This mutex is |
| 72 | * independent on the task spinlock. |
73 | * independent on the task spinlock. |
| 73 | */ |
74 | */ |
| 74 | mutex_t futexes_lock; |
75 | mutex_t futexes_lock; |
| 75 | btree_t futexes; /**< B+tree of futexes referenced by this task. */ |
76 | btree_t futexes; /**< B+tree of futexes referenced by this task. */ |
| 76 | }; |
77 | }; |
| 77 | 78 | ||
| 78 | extern spinlock_t tasks_lock; |
79 | extern spinlock_t tasks_lock; |
| 79 | extern btree_t tasks_btree; |
80 | extern btree_t tasks_btree; |
| 80 | 81 | ||
| 81 | extern void task_init(void); |
82 | extern void task_init(void); |
| 82 | extern task_t *task_create(as_t *as, char *name); |
83 | extern task_t *task_create(as_t *as, char *name); |
| 83 | extern void task_destroy(task_t *t); |
84 | extern void task_destroy(task_t *t); |
| 84 | extern task_t *task_run_program(void *program_addr, char *name); |
85 | extern task_t *task_run_program(void *program_addr, char *name); |
| 85 | extern task_t *task_find_by_id(task_id_t id); |
86 | extern task_t *task_find_by_id(task_id_t id); |
| 86 | extern int task_kill(task_id_t id); |
87 | extern int task_kill(task_id_t id); |
| 87 | 88 | ||
| 88 | 89 | ||
| 89 | #ifndef task_create_arch |
90 | #ifndef task_create_arch |
| 90 | extern void task_create_arch(task_t *t); |
91 | extern void task_create_arch(task_t *t); |
| 91 | #endif |
92 | #endif |
| 92 | 93 | ||
| 93 | extern __native sys_task_get_id(task_id_t *uspace_task_id); |
94 | extern __native sys_task_get_id(task_id_t *uspace_task_id); |
| 94 | 95 | ||
| 95 | #endif |
96 | #endif |
| 96 | 97 | ||